30971914 has 16 divisors (see below), whose sum is σ = 48407040. Its totient is φ = 14845680.

The previous prime is 30971903. The next prime is 30971917. The reversal of 30971914 is 41917903.

It is a self number, because there is not a number n which added to its sum of digits gives 30971914.

It is not an unprimeable number, because it can be changed into a prime (30971917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4467 + ... + 9049.

It is an arithmetic number, because the mean of its divisors is an integer number (3025440).

Almost surely, 2^30971914 is an apocalyptic number.

30971914 is a deficient number, since it is larger than the sum of its proper divisors (17435126).

30971914 is a wasteful number, since it uses less digits than its factorization.

30971914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4725.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 30971914 is about 5565.2415940370. The cubic root of 30971914 is about 314.0431668784.

The spelling of 30971914 in words is "thirty million, nine hundred seventy-one thousand, nine hundred fourteen".